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Department of Laser Technologies

dr. Gediminas RačiukaitisHead of department dr. Gediminas Račiukaitis
phone +370 5 2644868
Website: http://www.lts-ftmc.lt/

The activities of the department of Laser Technologies includes Nanophotonics, Laser Science and Applications, the Development of Optical Component of Lasers, the Design of new Fiber and solid-state Lasers and their Application for Precise Material Processing. Our research focuses on the development of complex dielectric optical coatings, high-pulse energy fiber lasers, and amplifiers. Nonlinear interactions by generating harmonics or combining laser beams are used to increase laser power. High-average power solid state lasers excited by diodes with synchronized modes or modulated quality of solid-state lasers are developed for specialized technological applications. New interactions between laser radiation and materials are looking in order to develop and install laser microfabrication technologies for the modification of metals, semiconductors, dielectrics, as well as for the modification of thin layers of solar cells. Research is also being carried out by modeling, developing and characterizing nanophotonic structures, waveguides, and metamaterials for light control.

 Laboratories:


Gallery



Services
  • Development of microprocessing, modification, cutting, drilling, welding, laser surface and volume marking technologies by using short and ultrashort pulses lasers, and their implementation in industry;
  • Development of specialized solid-state and fiber lasers;
  • Design of dielectric optical coatings and production of small parties;
  • Modeling of waveguide and photonic crystal structures and light propagation in them;
  • Development of 3D technology and robotics
Equipment

LASER MICROFABRICATION LABORATORY

Laser microfabrication system MASTER DUO

  • Includes two laser sources (ps, fs);
  • up to 5 axes synchronous positioning system;
  • and advanced sensory solutions for real time processing control.

Ultra-short pulse laser PHAROS-6W-600kHz with second harmonic module

Ultra-short pulse generator ATLANTIC1064-SH/TH

Nanosecond laser Baltic1064HP with harmonic module

Nanosecond laser NL220

Scanning electron microscope JSM6490LV with EDS and WDS

Turbo-Pumped Sputter Coater Q150T ES

Profilometer Dektak 150

Optical micrsocope OLYMPUS BX51TF

Optical micrsocope LV100D

Fiber welding machine FUJIKURA FSM‐45PM‐LDF

Fiber welding machine FUJIKURA FSM‐100P

Fiber and glass processing machine VYTRAN GPX‐3400

Spectrum analyzer Ando AQ6315E

Spectrum analyzer Yokogawa AQ6373

CNC milling machine Haas Super Mini Mill 2

Osciloscope Tektronix DPO 3032 300MHz

Steak camera for registration of ultrafast processes C5680-22 Hamamatsu

Oscilloscope DSO5034A Agilent Technologies 300MHz

Signal / Spectrum Analyzer Agilent Technologies CXA N9000A

Oscilloscope Tektronix DSA8200

Fast oscilloscope TEKTRONIX DPO7200 4C (20 GHz, 100 GS/s)

Wave front curve sensor WFS150‐SC

Beam profilometer Spiricon SP-620U

OPTICAL COATINGS LABORATORY

Ion beam sputtering device (IBS, IBS@LAB)

Electron beam deposition device (e-beam, VERA-1100)

Magnetron sputtering device (MS, Kurt J. Lesker PVD 225)

Ultrasonic cleaner device (UCS-40)

Atomic force microscope Nanowizard 3

Atomic layer depostition device 

NANOPHOTONICS LABORATORY

SOI Nanophotonics characterization stand

Coputer workstation (two i7 CPU)

projects
  • Eurostars project SLAM-HELP (G. Račiukaitis) 2016-2019

  • LMT NMP „Towards future technologies“ project „Formation of bio-inspired functional surfaces for space applications by hybrid laser-chemical processing technology“, FUNSPACE (M. Gedvilas) 2016-2018

  • LMT NMP „Towards future technologies“ project „New generation high-luminous compact laser emitter for advanced space applications and research“, NUCLEFASAR (A. Baltuška)

  • LMT NMP „Towards future technologies“ project „Nonlinear combination of pulsed lasers and generation of laser pulse trains with controllable parameters“, (K. Regelskis)

Most important publications
  1. Alexandr Belosludtsev, Naglis Kyžas. Real-time in-situ investigation of copper ultrathin films growth. Materials letters. ISSN 0167-577X. 2018, vol. 232, p. 216-219.
  2. Armandas Balčytis, Nishijima Yoshiaki, Sivashankar Krishnamoorthy, Aleksandr Kuchmizhak, Paul R.Stoddart, Raimondas Petruškevičius, Saulius Juodkazis. From fundamental toward applied SERS: Shared principles and divergent approaches. Advanced optical materials. ISSN 2195-1071. 2018, vol. 6, iss. 16, art. no. 1800292, p. 1-29.
  3. Romualdas Trusovas, Gediminas Niaura, Justina Gaidukevič, Ieva Mališauskaitė, Jurgis Barkauskas. Graphene oxide-dye nanocomposites: effect of molecular structure on the quality of laser-induced graphene. Nanotechnology. ISSN 0957-4484. 2018, vol. 29, no. 44, art. no. 445704, p. 1-9.
  4. Vidmantas Tomkus, Valdas Girdauskas, Juozas Dudutis, Paulius Gečys, Valdemar Stankevič, Gediminas Račiukaitis. High-density gas capillary nozzles manufactured by hybrid 3D laser machining technique from fused silica. Optics express. ISSN 1094-4087. 2018, vol. 26, iss.21, p. 27965-27977.
  5. Julijanas Želudevičius, Marijus Mickus, Kęstutis Regelskis. Investigation of different configurations and operation regimes of fiber pulse generators based on nonlinear spectral re-shaping. Optics express. ISSN 1094-4087. 2018, vol. 26, iss.21, p. 27247-27264.
  6. Andrius Paulauskas, Saulius Tumėnas, Algirdas Selskis, Tomas Tolenis, Audrius Valavičius, Zigmas Balevičius. Hybrid Tamm-surface plasmon polaritons mode for detection of mercury adsorption on 1D photonic crystal/gold nanostructures by total internal reflection ellipsometry. Optics express. ISSN 1094-4087. 2018, vol. 26, iss. 23, p. 30400-30408.
  7. Andrius Žemaitis, Mantas Gaidys, Marijus Brikas, Paulius Gečys, Gediminas Račiukaitis, Mindaugas Gedvilas. Advanced laser scanning for highly-efficient ablation and ultrafast surface structuring: experiment and model. Scientific reports. ISSN 2045-2322. 2018, vol. 8, art. no. 17376, p. 1-14.
  8. Laurynas Veselis, Tadas Bartulevičius, Karolis Madeikis, Andrejus Michailovas, Nerijus Rusteika. Compact 20 W femtosecond laser system based on fiber laser seeder, Yb:YAG rod amplifier and chirped volume Bragg grating compressor. Optics express. ISSN 1094-4087. 2018, vol. 26, no. 24, p. 31873-31879.
  9. Armandas Balčytis, Meguya Ryu, Saulius Juodkazis, Junko Morikawa. Micro-thermocouple on nano-membrane: thermometer for nanoscale measurements. Scientific reports. eISSN 2045-2322. 2018, vol. 8, art. no. 6324, p. 1-6.
  10. E. Mitsai, A. Kuchmizhak, E. Pustovalov, A. Sergeev, A. Mironenko, S. Bratskaya, D. P. Linklater, Armandas Balčytis, E. Ivanova, S. Juodkazis. Chemically non-perturbing SERS detection of a catalytic reaction with black silicon. Nanoscale. ISSN 2040-3364. 2018, vol. 10, iss. 20, p. 9780-9787.
  11. Tarasenka N., Kiris V., Stankevičius, Evaldas, Tarasenko N., Pankov V., Krčma F., Gečys Paulius, Račiukaitis Gediminas. Laser irradiation of Gd-Si and Gd-Si-Ge colloid mixtures for the fabrication of compound nanoparticles. ChemPhysChem. ISSN 1439-4235. 2018, vol. 19, iss. 23, p. 3247-3256.
  12. Tadas Bartulevičius, Laurynas Veselis, Karolis Madeikis, Andrejus Michailovas, Nerijus Rusteika. Compact femtosecond 10 μJ pulse energy fiber laser with a CFBG stretcher and CVBG compressor. Optical fiber technology. ISSN 1068-5200. 2018, vol. 45, p. 77-80.
  13. Shumakova V., Ališauskas S., Malevich P., Gollner C., Baltuška Andrius, Kartashov D., Zheltikov A. M., Mitrofanov A. V., Voronin A. A., Sidorov-Biryukov D. A., Pugžlys Audrius. Filamentation of mid-IR pulses in ambient air in the vicinity of molecular resonances. Optics letters. ISSN 0146-9592. 2018, vol. 43, no. 9, p. 2185-2188.
  14. Ratautas Karolis, Andrulevičius Mindaugas, Jagminienė Aldona, Stankevičienė Ina, Norkus Eugenijus, Račiukaitis Gediminas. Laser-assisted selective copper deposition on commercial PA6 by catalytic electroless plating – process and activation mechanism. Applied surface science. ISSN 0169-4332. 2019, vol. 470, p. 405-410.
  15. Romualdas Trusovas, Karolis Ratautas, Gediminas Račiukaitis, Gediminas Niaura. Graphene layer formation in pinewood by nanosecond and picosecond laser irradiation. Applied surface science. ISSN 0169-4332. 2019, vol. 471, p. 154-161.
  16. Stankevičius Evaldas, Garliauskas Mantas, Laurinavičius Lukas, Trusovas Romualdas, Tarasenko Nikolai, Pauliukaitė Rasa. Engineering electrochemical sensors using nanosecond laser treatment of thin gold film on ITO glass. Electrochimica acta. ISSN 0013-4686. 2019, vol. 297, p. 511-522.
  17. Baumgarten Manuela, Hesse Benjamin D, Augustaitienė Ingrida, Marozas Vitas, Mozgeris Gintautas, Byčenkienė Steigvilė, Mordas Genrik, Pivoras Ainis, Pivoras Gintaras, Juonytė Diana, Ulevičius Vidmantas, Augustaitis Algirdas, Matyssek Rainer. Responses of species-specific sap flux, transpiration and water use efficiency of pine, spruce and birch trees to temporarily moderate dry periods in mixed forests at a dry and wet forest site in the hemi-boreal zone. Journal of Agricultural Meteorology. ISSN 0021-8588. 2019, vol. 75, iss. 1, p. 13-29.
  18. Andrius Žemaitis, Mantas Gaidys, Paulius Gečys, Gediminas Račiukaitis, Mindaugas Gedvilas. Rapid high-quality 3D micro-machining by optimised efficient ultrashort laser ablation. Optics and Lasers in Engineering. ISSN 0143-8166. 2019, vol. 114, p. 83-89.
  19. Juozas Dudutis, Rokas Stonys, Gediminas Račiukaitis, Paulius Gečys. Glass dicing with elliptical Bessel beam. Optics & laser technology. ISSN 0030-3992. 2019, vol. 111, p. 331-337.
  20. Evaldas Stankevičius, Elena Daugnoraitė, Gediminas Račiukaitis. Mechanism of pillars formation using four-beam interference lithography. Optics and lasers in engineering. ISSN 0143-8166. 2019, vol. 116, p. 41-46.
  21. Lukas Laurinavičius, Aneta Radzevič, Ilja Ignatjev, Gediminas Niaura, Kornelija Vitkutė, Titas Širšinaitis, Romualdas Trusovas, Rasa Pauliukaitė. Investigation of electrochemical polymerisation of L-lysine and application for immobilisation of functionalised graphene as platform for electrochemical sensing. Electrochimica acta. ISSN 0013-4686. 2019, vol. 299, p. 936-945.
  22. Simonas Indrišiūnas, Heiko Richter, Ignas Grigelionis, Vytautas Janonis, Linas Minkevičius, Gintaras Valušis, Gediminas Račiukaitis. Till Hagelschuer,; Heinz-Wilhelm Hübers,; [Irmantas Kašalynas,]. Laser-processed diffractive lenses for the frequency range of 4.7 THz. Optics letters. ISSN 0146-9592. 2019, vol. 44, no. 5, p. 1210-1213.
  23. Ina Stankevičienė, Aldona Jagminienė, Loreta Tamašauskaitė-Tamašiūnaitė, Zita Sukackienė, Mindaugas Gedvilas, Eugenijus Norkus. Investigation of electroless deposition of cobalt films by EQCM in the presence of different amines. Materials science & engineering B. ISSN 0921-5107. 2019, vol. 241, p. 9-12.
  24. Vitas Marozas, Algirdas Augustaitis, Ainis Pivoras, Manuela Baumgarten, Gintautas Mozgeris, Jurgita Sasnauskienė, Anželika Dautartė, Jolita Abraitienė, Steigvilė Byčenkienė, Genrik Mordas, Vidmantas Ulevičius, Matyssek Rainer. Comparative analyses of gas exchange characteristics and chlorophyll fluorescence of three dominant tree species during the vegetation season in hemi-boreal zone, Lithuania. Journal of Agricultural Meteorology. ISSN 0021-8588.2019, vol. 75, iss. 1, p. 3-12.
  25. Vidmantas Tomkus, Valdas Girdauskas, Juozas Dudutis, Paulius Gečys, Valdemar Stankevič, Gediminas Račiukaitis. Impact of the wall roughness on the quality of micrometric nozzles manufactured from fused silica by different laser processing techniques. Applied surface science. ISSN 0169-4332. eISSN 1873-5584. 2019, vol. 483, p. 205-211.
  26. Julijanas Želudevičius, Rokas Rutkauskas, Kęstutis Regelskis. Coherent beam combining of pulsed fiber amplifiers by noncolinear sum-frequency generation. Optics letters. ISSN 0146-9592. 2019, vol. 44, no. 7, p. 1813-1816.
 PATENTS:
  1. Gediminas Račiukaitis, Mindaugas Gedvilas, Bogdan Voisiat, FTMC. Method for formation of periodical structures in thin material films by interfering laser beams, European patent No. EP2431120, issue date 2017-07-05.
  2. Karolis Ratautas, Gediminas Račiukaitis, Aldona Jagminienė, Ina Stankevičienė, Eugenijus Norkus, FTMC. Būdas, skirtas elektrai laidžioms sritims ant polimerinio gaminio paviršiaus formuoti = Method for formation of electro-conductive traces on polymeric article surface, LT patentas Nr. LT 6518 B, išduotas 2018-04-25.
  3. Karolis Ratautas, Gediminas Račiukaitis, Aldona Jagminienė, Ina Stankevičienė, Eugenijus Norkus, FTMC. Selektyvus polimerinio gaminio paviršiaus metalizavimo būdas = Method for selective metallization of polymeric article, LT patentas Nr. LT 6517 B, išduotas 2018-04-25.
  4. Kęstutis Regelskis, Gediminas Račiukaitis, FTMC. Method and generator for generating ultra-short light pulses. Patento Nr. US 10038297 B2.